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git://nv-tegra.nvidia.com/linux-nvgpu.git
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a9785995d5
This patch moves the NVIDIA GPU driver to a new location. Bug 1482562 Change-Id: I24293810b9d0f1504fd9be00135e21dad656ccb6 Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Reviewed-on: http://git-master/r/383722 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
103 lines
3.5 KiB
C
103 lines
3.5 KiB
C
/*
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* drivers/video/tegra/host/gk20a/channel_sync_gk20a.h
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*
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* GK20A Channel Synchronization Abstraction
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*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef _GK20A_CHANNEL_SYNC_H_
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#define _GK20A_CHANNEL_SYNC_H_
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#include <linux/types.h>
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struct gk20a_channel_sync;
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struct priv_cmd_entry;
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struct channel_gk20a;
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struct gk20a_channel_fence {
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bool valid;
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bool wfi; /* was issued with preceding wfi */
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u32 thresh; /* either semaphore or syncpoint value */
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};
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struct gk20a_channel_sync {
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/* CPU wait for a fence returned by incr_syncpt() or incr_fd(). */
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int (*wait_cpu)(struct gk20a_channel_sync *s,
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struct gk20a_channel_fence *fence,
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int timeout);
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/* Test whether a fence returned by incr_syncpt() or incr_fd() is
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* expired. */
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bool (*is_expired)(struct gk20a_channel_sync *s,
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struct gk20a_channel_fence *fence);
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/* Generate a gpu wait cmdbuf from syncpoint. */
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int (*wait_syncpt)(struct gk20a_channel_sync *s, u32 id, u32 thresh,
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struct priv_cmd_entry **entry);
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/* Generate a gpu wait cmdbuf from sync fd. */
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int (*wait_fd)(struct gk20a_channel_sync *s, int fd,
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struct priv_cmd_entry **entry);
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/* Increment syncpoint/semaphore.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired().
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*/
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int (*incr)(struct gk20a_channel_sync *s,
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struct priv_cmd_entry **entry,
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struct gk20a_channel_fence *fence);
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/* Increment syncpoint/semaphore, preceded by a wfi.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired().
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*/
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int (*incr_wfi)(struct gk20a_channel_sync *s,
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struct priv_cmd_entry **entry,
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struct gk20a_channel_fence *fence);
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/* Increment syncpoint, so that the returned fence represents
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* work completion (may need wfi) and can be returned to user space.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired(),
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* - a syncpoint id/value pair that can be returned to user space.
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*/
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int (*incr_user_syncpt)(struct gk20a_channel_sync *s,
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struct priv_cmd_entry **entry,
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struct gk20a_channel_fence *fence,
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u32 *id, u32 *thresh);
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/* Increment syncpoint/semaphore, so that the returned fence represents
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* work completion (may need wfi) and can be returned to user space.
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* Returns
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* - a gpu cmdbuf that performs the increment when executed,
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* - a fence that can be passed to wait_cpu() and is_expired(),
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* - a sync fd that can be returned to user space.
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*/
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int (*incr_user_fd)(struct gk20a_channel_sync *s,
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struct priv_cmd_entry **entry,
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struct gk20a_channel_fence *fence,
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int *fd);
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/* Reset the channel syncpoint/semaphore. */
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void (*set_min_eq_max)(struct gk20a_channel_sync *s);
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/* Free the resources allocated by gk20a_channel_sync_create. */
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void (*destroy)(struct gk20a_channel_sync *s);
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};
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struct gk20a_channel_sync *gk20a_channel_sync_create(struct channel_gk20a *c);
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#endif
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